Environment-friendly rust removal and prevention composition

Abstract

The invention relates to the field of iron metal surface treatment, in particular to an environment-friendly rust removal and prevention composition. The environment-friendly rust removal and prevention composition is prepared from sulfamic acid, phosphoric acid, phytic acid, organic phosphoric acid derivatives, ethyl alcohol, imidazoline derivatives, urea derivatives, n-butyl alcohol, polyferric sulfate, sodium chloride and water. The environment-friendly rust removal and prevention composition is good in cleaning effect, high in cleaning speed, free of acid mist volatilization, environmentally friendly and long in service life; the effective concentration range is large, the influence of temperature and media is small, and the corrosion inhibition effect is good; and meanwhile, the affinity of a treated metal surface in mutual contact with other finish paint is enhanced.

Description

technical field [0001] The invention relates to the field of iron metal surface treatment, in particular to an environment-friendly rust-removing and anti-rust composition. Background technique [0002] Rust removal and rust prevention of steel parts is a major event related to production safety, beautiful environment, and people's physical and mental health. At present, many commonly used rust removers mostly use strong acids, such as hydrochloric acid, sulfuric acid, etc. Although the use of this rust remover can achieve a good rust removal effect, these rust removers are easy to damage the environment during use. cause harm, and the waste water produced after use will also increase the cost of post-treatment, and it is also an important source of further environmental pollution. Therefore, it is necessary to develop a rust remover that is environmentally friendly and has efficient rust removal and antirust capabilities. [0003] Rust removers in the prior art often use ...

AI Technical Summary

Problems solved by technology

However, due to the limited solubility of sulfamic acid in water, and the sulfamic acid molecule has amino and the dual functional groups of hydroxyl, the concentration of fully ionized hydrogen ions in its aqueous solution is greatly reduced, so that its reaction rate with metal oxides is low. As a result, the cleaning effect is not good, which limits its application in the cleaning industry

Urea compounds have a certain corrosion inhibition effect, but because the corrosion inhibition effect of these compounds is greatly affected by temperature, concentration and use medium, and there is a phenomenon of extreme concentration, the effective concentration range of corrosion inhibition effect is relatively small when used. Small, which makes it difficult to control in actual application, thus limiting its practical application in rust removal and antirust

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